UPDATE: This seller has redone several different CJ-2As like this. I may be mistaken, but it looks like the same paint that was used on the body was used on the motor.
“ENGINE:ORIGINAL 4 CYLINDER WILLYS FLATHEAD ENGINE, NICE RUNNING-ORIGINAL 6 VOLT SYSTEM.STARTS,RUNS,SHIFTS & STOPS GREAT.ENGINE HAS NO KNOCKS,TAPS, SMOKE,OR RATTLES.FRESH OIL CHANGE & LUBE.BRAKES ARE REAL NICE AND STRONG.SMOOTH,QUITE,STRONG RUNNING ENGINE.TRUE MILAGE UNKNOWN ON THIS 64 YO. JEEP… Much more specifics on eBay.”